Tea product and process of making same.



' UNITED STATES;

PATENT oEnIoE.

JOHANN FRIEDRICH MEYER, JR., AND KARI; WIMMER, or BREMEN, GERMANY.

TEA PRODUCT 'AND PROCESS OF MAKING SAME.

Specification of Letters Patent.

Application filed October 1, 1906. Serial No. 336,973Z

Patented Sept. 1, 1908.

To all whom it may concern: ,5,

Be it known that we, JOHANN FRIEDaIoH MEYER, Jr., and KARL WIMMER, subjects of the German Emperor, residing at Bremen,

Germany, have Invented certain new anduseful Improvements Relating to Tea and to the Preparation or Treatment of the Same, of which the following is a specification.

This invention relates to a tea productand method of manufacturing the same and the object thereof is to provide a tea product free of theine and with the aromatic constituents of the tea unimpaired to any material extent Attem ts have been made for relieving tea leaves 0 theine, but it has been demonstrated that the volatile solvents used for such purpose dissolve all aromatic constituents of the tea but not the theine, the reason being tlfat the tea leaves do not contain free ,theme but compounds of theine, which will not dissolve in volatile solvents such as chloaromatic substances, or a different solvent may be used. When the tea has been relieved of theine the solution containing the aromaticconstituents is again added to the tealeaves by the impregnation of the leaves with such constituents, after which the solvent is distilled off.

As more clearly settin forth thef method of procedure and the ro uctobtained reference is had to the fol owing specific example of the process] 10 kilogramsof tea are treated with a petroleum spirit,.by way of example benzol, in a suitable apparatus. This will cause the removal of the aromatic constituents from'the tea, but no theine .is

dissolved, the aromatic constituents being the aromatic oils and tannin. The solvent containing the aromatic oils and tannin'is then drawn off after the extraction has been completed. The tea is then subjected to plied to the apparatus at one end and until end of the apparatus. I y subjecting e tea to the ammoniac gas the salts of theme are a volatile solvent such as chloroform whereby the theine enters into solution. When this step has been completed, the solvent with the theine is drawn off, the tea is then dried by indirect heat, after which the petroleum latter is thoroughly im regnated' the petroleum'spirit is then distilled off while continbeing that thetea will contain the aromatic tent, but the tea will be free of theine.

' What we claim is free from t eine, subjecting t tile solvent whereby the aromatic bodies are extracted from the tea, then removing the solvent containing the aromatic bodies, then decomposing the salts of theine contained in the tea, then subjecting the tea to a volatile solvent whereby the theine is extracted, then withdrawing the solvent .containing the theine, then impregnating the tea with the tioned solvent.

theine, su ject the tea to a petroleum spirit then extractin the theine by subjecting the teato chloro orm, then withdrawing the chloroform containing the theine, then drycontaining the aromatic constituents and ithoroughly impregnating the tea with said steam, after which ste'pammoniac gas is sup Its odor becomes perce tible at the op osite decom' osed. The tea is then subjected to,

spirit containing the aromatic constituents in solution is added-"to the tea whereby the ually stirring the tea, the resulting product 1'. In a rocess for the preparation of tlea eteatoavo a- 2. In a rocess for preparing tea free fromconstituents unimpaired to any materialexsolvent containmglthe aromatic -constituents, and then distilling ofl the last 'menwhereby the aromatic constituents are extracted, then removing said petroleum spirit then subjecting the tea to steam and ammonia to decompose the salts of theine,

ing the tea, then adding the petroleum spirit constituents, and then finally distilling ofi hands hereunto in the presence of ttvosubthe petroleum spirit; scribing witnesses. u

3. As a new'article of manufacture, tea JOHANN FRIEDRICH MEYER, JR. leaves-eriginall containing theine, freed KARL WIMMER. 5 therefrom and a'ving their remaining aro- Witnesses:

matic constituents substantially unimpaired. ERNEST H. L. MUMMENHOFF,

In testimony whereof. we have set our OTTO W. HELLMRIGH. 

